20169454 has 4 divisors (see below), whose sum is σ = 30254184. Its totient is φ = 10084726.

The previous prime is 20169427. The next prime is 20169481. The reversal of 20169454 is 45496102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20169427) and next prime (20169481).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5042362 + ... + 5042365.

It is an arithmetic number, because the mean of its divisors is an integer number (7563546).

Almost surely, 2^20169454 is an apocalyptic number.

20169454 is a deficient number, since it is larger than the sum of its proper divisors (10084730).

20169454 is a wasteful number, since it uses less digits than its factorization.

20169454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084729.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 20169454 is about 4491.0415273074. The cubic root of 20169454 is about 272.2062215656.

The spelling of 20169454 in words is "twenty million, one hundred sixty-nine thousand, four hundred fifty-four".